Possibly the best moment in Ridley Scott’s rococo-a-go-go true-crime drama House of Gucci is the one in which the brash, ambitious young typist Patrizia Reggiani, in pursuit of Maurizio Gucci, the shy and charming heir to the old-money leather-goods empire, writes her phone number in bold strokes of lipstick on his motorbike’s windshield. That’s a…

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